setTimeZone.sh
#!/bin/sh
####################################################################################################
#
# Copyright (c) 2010, JAMF Software, LLC.  All rights reserved.
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#       modification, are permitted provided that the following conditions are met:
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#                 derived from this software without specific prior written permission.
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#       SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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####################################################################################################
#
# SUPPORT FOR THIS PROGRAM
#
#       This program is distributed "as is" by JAMF Software, LLC's Resource Kit team. For more
#       information or support for the Resource Kit, please utilize the following resources:
#
#               http://list.jamfsoftware.com/mailman/listinfo/resourcekit
#
#               http://www.jamfsoftware.com/support/resource-kit
#
#       Please reference our SLA for information regarding support of this application:
#
#               http://www.jamfsoftware.com/support/resource-kit-sla
#
####################################################################################################
#
# ABOUT THIS PROGRAM
#
# NAME
#	setTimeZone.sh -- Set the time zone
#
# SYNOPSIS
#	sudo setTimeZone.sh
#	sudo setTimeZone.sh <mountPoint> <computerName> <currentUsername> <timeZone>
#
# 	If the $timeZone parameter is specified (parameter 4), this is the time sone that will be set.
#
# 	If no parameter is specified for parameter 4, the hardcoded value in the script will be used.
#
# DESCRIPTION
#	This script sets the system time zone as reflected in the Date & Time preference pane with the
#	System Preferences application.  It has been designed to work on Mac OS X 10.3 and higher.
#
#	A list of supported time zone entries can be found by running the command:
#
#		For Mac OS X 10.5 or later:
#
#			/usr/sbin/systemsetup -listtimezones
#
#		For Mac OS X 10.4 or earlier:
#
#			/System/Library/CoreServices/RemoteManagement/ARDAgent.app/Contents/Support/systemsetup -listtimezones
#
#	The system time zone will be set according to the value specified in the paramter $timeZone.
#	It can be used with a hardcoded value in the script, or read in as a parameter.  Since the
#	Casper Suite defines the first three parameters as (1) Mount Point, (2) Computer Name and
#	(3) username, we are using the forth parameter ($4) as the passable parameter.  If no parameter
#	is passed, then the hardcoded value will be used.
#
####################################################################################################
#
# HISTORY
#
#	Version: 1.0
#
#	- Created by Nick Amundsen on August 5th, 2008
#
#	Version: 2.0
#
#	- Updated by Brock Walters October 28 2014
#
####################################################################################################
#
# DEFINE VARIABLES & READ IN PARAMETERS
#
####################################################################################################
#
# A HARDCODED VALUE FOR "timeZone" CAN BE SET BELOW.
#
# A list of accepted time zone values can be generated using the following command in Terminal:
#
#		sudo systemsetup -listtimezones
#
# Delete the double quotes and replace with the desired time zone name, e.g. timeZone=Pacific/Honolulu
# If this script is to be deployed via policy using the JSS leave the next line as is.
#
####################################################################################################

timeZone=""

####################################################################################################
#
# SCRIPT CONTENTS - DO NOT MODIFY BELOW THIS LINE
#
####################################################################################################

# CHECK TO SEE IF A VALUE WAS PASSED IN PARAMETER 4 AND, IF SO, ASSIGN TO "timeZone"

if [ "$4" != "" ] && [ "$timeZone" == "" ]
then
    timeZone=$4
fi

osx=$(/usr/bin/defaults read /System/Library/CoreServices/SystemVersion ProductVersion)
maj=$(/usr/bin/defaults read /System/Library/CoreServices/SystemVersion ProductVersion | awk '{print substr($1,1,2)}')
ref=$(/usr/bin/defaults read /System/Library/CoreServices/SystemVersion ProductVersion | awk '{print substr($1,4,2)}')

if [ $maj -gt 10 ]
then
	echo
	echo "Check OS string format & OS X systemsetup utility for script compatibility with OS X version $osx"
	echo
	exit
fi

if [ "$timeZone" != "" ]
then
	if [ $ref -lt 5 ]
	then
		echo
		echo "Setting time zone for OS X $osx..."
		/System/Library/CoreServices/RemoteManagement/ARDAgent.app/Contents/Support/systemsetup -settimezone "$timeZone"
		/usr/bin/killall SystemUIServer
		echo "Refreshing the clock in the Menu Bar..."
		echo
	else
		echo
		echo "Setting time zone for OS X $osx..."
		/usr/sbin/systemsetup -settimezone "$timeZone"
		/usr/bin/killall SystemUIServer
		echo "Refreshing the clock in the Menu Bar..."
		echo
	fi
else
	echo
	echo "Error: The timeZone variable is not populated. Press the return key "
	echo "to generate a list of valid time zones. Select & copy the desired "
	echo "time zone from the list & paste into the script on the line reading "
	echo
	echo "	timeZone=\"\" "
	echo
	read -p ""
   /usr/sbin/systemsetup listtimezones
   exit
fi